Sash seat for double hung windows



June 14, 1960 'T. P. KQEBEL 2,940,139

SASH SEAT FOR DOUBLE HUNG WINDOWS lll" Il' IIII" June 14, 1960 T. P. KOEBEL 2,940,139

sAsH SEAT FOR DOUBLE HUNG wINnows Filed March 12, 1958 2 Sheets-Sheet 2 'United States Patent *0 SASH SEAT FOR DOUBLE HUNG WINDOWS Thomas P. Koebel, Homewood, Ill., assignor to Zegers, Inc., a corporation of Illinois Filed Mar. 12, 1958, Ser. No. 721,009

8 Claims. (Cl. 20-52) My invention relates to a sash seat for double hung windows, and more particularly, to a sash seat for the modern double hung windows employing metal combination weatherstrip and sash guides along the window frame jambs.

Window structures of this type frequently employ sash guide tracks, mounted or formed in the guideways ofthe weatherstrip and sash guide members, which terminate well above the sill. The .tracks are ordinarily of the same length `for the inner and outer sash, but are sufciently short so that when the sash are moved to their lowermost positions, the tracks protrude only a short distance into the complementary slide grooves that are formed in the sash side rails.

As the sill of the window ordinarily slopes downwardly outwardly of the window structure, the outer sash may be moved to a somewhat lower position than the inner sash, which elects -a complete dislodgment of the sash from its tracks.

It has become a common practice to limit the possible downward movement of the outer sash by securing a sash seat in its guideways. Conventional sash seats of this type ordinarily `are nailed into the jamb structure through the combination weatherstrip and sash guide members or are riveted to the latter.

Experience has shown that these conventional sash seats soon become detached in performing thevery function lfor which they `are provided. The shock they absorb when the sash is forced against them acts through a sizable lever arm :to readily pry them away from the jamb or weatherstrip and guideway member -to which they `are attached. This necessarily results in unsightly holes and even tears being formed in the weatherstrip and guideway members, and materially detracts from their usefulness as weatherstripping. Unless the detached sash seats are re-secured in position, their useful service is prematurely ended.

A principal `object of my invention is to provide a sash seat for double Ihung window structures that adequately resists any shocks applied thereto by the sash.

A further principal object of the invention is to provide a sash seat for double hung windows which eliminates the need for rigidly fixing the sash seat either to the jamb or to the combination weatherstrip and guideway unit. Another object of the invention is to provide a sash seat for double hung windows that is economical of manufacture, that is easily and conveniently installed in operating position, and which is Areadily adapted for use on a wide variety of double hung window structures.

Other objects, uses and advantages will be obvious or become apparent from a consideration of the following detailed description and Ithe application drawings.

ln the drawings:

Figure l is a fragmental perspective view of a typical double hung window structure :to which a preferred embodiment of my invention has been applied;

Figure 2 is a cross-sectional view through the window "ice structure approximately along the line 2-2 of Figure 1; Figure 3 is a fragmental perspective view of the lower part of the lwindow structure shown in Figure 1, on an enlarged scale Vand more particularly illustrating the application of the sash seat to the window structure;

Figure 4 is a top plan view of the sash seat shown in 4Figure 3;

Figure 5 is a side elevational view of the shown in Figure 3; v

Figure 6 is a View similar to that of Figure 5 but showing the sash seat in its unlatched position; and

Figure 7 is an elevational view of the structure shown in Figure 3.

General description Reference numeral 10 of Figures 1, 3 and 7, generally indicates a preferred form of my sash seat applied to a .conventional double hun'gwindow structure 12 of the modern style. The window structure l12 includes upper and lower sashes 14 and 16 which ride on tracks 18 that are carried -by combination weatherstrip and sash guide members 20. As is'well known in the art, thesash side rails yare conventionally ll'formed with .grooves that are complementary in shape to the shape of tracks 18. Springs 22 secured between the tops of the members 20 and the bottom Vrails of the sash bias the sash upwardly of the window structure. y

The sash seat 10 is Vapplied in the guideways 24 in which the outer sash 14 operates. As mentioned hereinbefore, the sill 26 of the window structure conventionally slopes downwardly' outwardly of .the window and the lengths ofthe outer track rails 18 are such that the outer sash would become dislodged from its tracks if `the sash 14 were lowered into contact with the sill 26. Y

As best seen in Figure 3, the sash 'seat 10 comprises a strip of relatively stili material 30, such as a suitable spring steel, that is formed into a generallynght triangular conguration, including relatively straight legs 32 and 34 and hypotenuse portion 36, the hypotenuse 36 and the leg 34 being formed with interengaging locking means 38 whereby the ends of 'the strip are ysecured together.

The leg 32 of the strip 30 is placed behind the guideway 24 of the combination weatherstripA and guideway member and the leg 34 extends out into the guideway 24 through a perforation 40 formed in member 20.

The leg 34 is positioned suiciently high abo-ve sill 26 .to serve as an abutment against which the upper sash 12 engages when lowered to the broken line position of Figure 1 whereby lthe sash is maintained o n its ltracks 1S. The hypotenuse portion 36 serves as a brace for the abutment forming portion 34 and the sashseat at its apex 42 is placed in engagement with sill 26 (see Figures 2 and 7).

sash seat Specific description The specilic window structure illustrated is shown and is specifically described only for purposes of facilitating an understanding of the invention, as will be understood by those skilled in the art. The typical window structure illustrated ordinarily includes side jambs Y50, Sill 26 and a head section S2 (see Figures 1 and 2). These members provide the familiar rectangular window frame in which is mounted -theupper sash 14 and the lower sash 16. The combination weatherstrip and guideway members 20 are secured in any suitable manner to the respective jambs 50 and slidably mount the sashes 14 and 16 for the well known vert-ical movement.

The sashes ordinarily include side rails 56 that are formed with grooves 58 that are complementary in conguration -to ltrack-s 18. Top rails 60 and bottom rails 62 are united with the side rails 56 in any conventional manner to provide the usual association with window panes 64.

f .freni/its track. Y I Normally; la sash seat 10 :Wouldbe employed on either sidewpf the. window thoughn single `sash seatV A1Y0 will' -serve `the .purposewvherefthis lis desirable for reasons Ystops for Ythe upper sash 20, While the casing member V661sw provided across thetep f the window'. frame. at

the outside Ythereof'-te l.form an youter stop forfthe upper sash 14 at the' top of the window iranie, Y, Ort-the inner side of'thefwindow, top stop strip 68 is provided together with sidestep strips 70. Atathe bottom Qf the window, al vstool member 7.2v is mounted above uthe window sill.

' As Ybest seen in Figures 1 and 3, the combination weatherstripand. guideway Amembers 20 that are illustrated for purposes of description comprise a central Y:afterlife jamb'or rivetV it vin any manner tothe weatherstr'ip Yand suideway member .24-

since the columnar 'glengthethat the-:shock .load is applied channel 74 which Vprovidesrra rcentral'parting stop, rand laterally extending :webs :76 .and Y7;8 that terminate in 'Y perpendicular-ly. disposed nangesifthat are adaptedv to vcooperate With the sides 84 of channel 74 in' providing Y I the 'guideways lof :the -jmembers ,20. The tracks -18 in fthe illustrated window ystructure each takeY the formofY a metalstijip '9D kformed with aconveXly rounded central portion andftlan'ge portions 94 thatare fixed to Vthe respective webs 76 yand78 infany suitable mannerso that the 'rounded portions 92 .serve as sash tracks I8. Ihestrip 3,6 fis preferably formed from spring steel shapedV 'to approximately Vthe conguration i illustrated ordinarily kformed from Yalunriinum.r

lt should therefore be appreciated that I have gpro- V videdY a .simplifiedruggedsashrseat which is designed -to moreparticillarly.'fin Figures@ through 6 and described,

*in/generell above. Preferably, the"liypotcnuse portion i [13,6 is ,crimped Ainwardly atits lower end as at 160 and A the leg'32 -is liormedrvvith a4 longitudinally extending corrugatiofn'for .indentation 102. Thecrimped portionj 100 of theuhypotenuse fportion 36 is preferably positioned so that ,the ,lowerv deflected .portion 104 will 'abut against 1 Ythe'lowerend 106 'of crrugation 102 when the endsV of stripSl) are V.secured together in the, manner indicated in Theoutwardly kprojecting .leg 34.adjacent`its outer end isffomed -iiiith4 Vperforation'.1110V for receiving a tongue 1'12formed' 1in the` upper end ofhypotenus'e portion 36 to. secure the end's'fof the strip-together. Y Y f Theseat y isV applied `to, the outer guideway24 of the i cornb'inationf.vt'leatherstrip and'guideway member 20 by "forming'perioration 401m .the web/789i a member 24 Va;

to pro'iect through theperroration 40 when corner 120 ofY .i the seatfis in alignment with the'lowermost extremity of thermember {24j-see Figure 7')`- A relatively small triangular notch-,A124 isforn'ied"inY members 29 where f Vindicated :toperrnit thep'rseatrl() tont in place. 'Ifheseat 10 is thenappliedrtolthemembergllL beforeit is ,secured :against: jthe Windowjamb, A.b y'unlatching hypotenuse .portion 36 from ltfgfi -and-rinserting Vthelower edge 122 i ptit/he :member 2li/to the pointY within the seatthat will permit-tl-1e leg 34Hto project through perforation'lll. 1

The tongue 112 of Ahypotenuse portion l36 .isrthen moved intoyengagement with `perforation"111) Yto lock'the device Y .finloperating position VAwith :respect to lthe `member .20, Member may then be secured to the jamb in any conventionalV manner, .withthe :result that the corner 120 of the` seat -1-0 is placed in engagement with the sill '25 and'lle'g 34 .projects intoV Vthe path4 of yoperation of sash V14. 'f.Wl1en v.the sash 14 is .lowered to the broken ineposition of Figure `1,' it engages the sash seat, which assures" that the Vsash v14 will not becomedislodg'ed of economy. Y t

It will berlnoted thatithe sash -seat Y10 is secured in K place merely bybeing Ilooped around the ylower portion lferred 'directly 'tothe sill through hypotenuse portion ',36. Thus, 'i tisnot ynecessary to n ail the scatto the .Saat Arequiresonlr VvSeveral Simple Cutting operations-.01.1 .the weatherstrip and guideway ,members that do not in soV any way adversely atleet their appearanreV or functions. The foregoing .description and the drawings areei'ven merely to .explain and illustratemyinvention.and the `irwentionis not to be limited thereto, except insofar Avas sash seat for one ofthe sash lcomprising-a relativelystii member which in' use is secured toene-.ofthe Weathers'tripnand ,guide members inthe guideway for fsaid one vsash vadjacent `the lower Vend thereof, said relatively stiff member 'including a'brace member which inuseis placed in' contact. with the' sill and interposed linthe j path of operation of the one sash, the length oflsaidzbracemem- :ber `being proportionedftostopzthe downward movement ofthe one sash at a predetermined distancerabovefthe sill. Y.

"2. In a double hung 'sash .window structure including a window frame having spaced jamhs, asili,V metal vcom- Ybinat'ion weatherstrip .and sash Y guiderv'mernbers secured Ato each jamb, .saidmembers including .'guideways entending'longitudinally thereof and'having tracks secured in .the upper portions of said .guidewaysr, landinner andouter sash Vmounted between said .members .and .running on said tracks, `said tracks terminating short lof .the `lower ends of said membersvat .leastadistance thatgexceeds Ytheheight of the sash running thereon, a sash seat for one of .the sash comprising .a clip-like .member securcdito'thelower end of one of the guidewayszin .whichsaid coneesash runs, said clip-like member including a :brace'sti'ucture :in contact ywith pthe sill Yand .an .abutment :forming `member se-Y cured to'said brace structure and projectingaintothe'path of movement of saidone sash, said abutment forming member being .positioned .below Y.thejlower endof `the track of Ysaidnone .sash a distancefthat-is lessthanjthe height of said one sash, whereby said :abutment .forming member is positioned suicientlyxhigh iahoveithe vsill to stop Ydownward movementpf rsaid' one, sash before :it is disengaged from its track.

3. In a double hung sash window structure including a window frame having spaced jambs, a sill, metal combination weatherstrips and sash guide members secured to each jamb, said members including guideways extending longitudinally of said members and having tracks secured in the upper portions of said guideways, and inner and outer sash mounted between said members and running on said tracks, said ltracks terminating short of the lower ends lof said members at least a distance that exceeds the height of the sash running thereon, a sash seat for one of the sashes comprising a strip of relatively stiff material having its ends brought together and looped about the lower portion of the member in which said one sash runs, one portion of said strip contacting said sill and another portion passing through a perforation formed in the last mentioned member, the last mentioned portion defining an abutment structure projecting into the path of movement of said one sash, a further portion of said strip serving as a brace between said one portion thereof and said abutment structure, said abutment structure being positioned below the lower end of the track of said one sash a distance that is less Vthan the height of said one sash, whereby said abutment forming member is positioned suiciently high above -the sill to stop downward movement of said one sash before it is disengaged from its track.

4. In a double hung sash window structure including a window frame having spaced jambs, a sill, metal com bination Weatherstrip and sash guide members secured to each jamb including guideways extending longitudinally of said members and tracks secured in the upper portions of said guideways, and inner and outer sash mounted between said members and running on said tracks, said tracks termina-ting short of the lower ends of said members at least a distance that exceeds the height of the sash running thereon, a sash seat for one of the sash comprising a strip of relatively stil material having its ends secured together about a portion of one of said guideways that said one sash is guided by, said strip being formed into a generally right triangular crosssectional conguration, one of the legs of said conguration extending behind the member defining said one guideway and the other of said legs projecting laterally of said one leg and through a perforation formed in the last mentioned member, and the hypotenuse of said configuration extending between said laterally projecting leg and said sill, said other leg being positioned below the lower end of the track of said one sash a distance that is less than the height of said one sash, whereby said abutment forming member is positioned suiciently high above the sill to stop downward movement of said one sash before it is disengaged from its track.

5. The sash seat set forth in claim 4 wherein said hypotenuse is crimped inwardly at its lower end.

6. A sash seat comprising a strip of stili resilient material bent into a right triangular configuration with the ends of said strip disposed in juxtaposition at one end of the hypotenuse and the adjacentrend of one of the legs of said right triangular configuration, said strip ends being formed with tongue and perforation means for seeming said strip ends together, said hypotenuse being crimped inwardly at the other end thereof and toward the adjacent end of the other of the legs of said right triangular configuration, said other leg being indented toward said hypotenuse at least adjacent said crimped portion of said hypotenuse, said crimped portion of said hypotenuse and said indentation serving as clamping,

means when said ends of said strip are secured together, and said one leg serving as the sash engaging portion of the sash seat.

7. In a sash seat for a ventically movable sash window structure including a frame having spaced side jambs', a sill, a sash mounted between said jambs, and ltracks interposed between said sash and said jambs delining means for guiding the vertical movement of the sash in the window structure, said sash seat comprising a relatively stiff member adapted to be secured below the tracks and at a comer of the window structure dened by one of the jambs and the sill, said member defining a projection which in use extends laterally of said one jamb and above said sill against which the sash is to engage when disposed at its lower limit of vertical movement within the window structure, said member also defining a brace portion extending from the projecting end of said projection and proportioned to engage the sill when in use, whereby said projection is braced against displacement when engaged by 'the sash.

8. In a sash seat for a vertically movable sash window structure including a frame having spaced side jambs, a sill, combination weatherstrip and sash guide members secured to each jamb including guideways extending longitudinally of said members and tracks secured in the upper portions of said guideways, and a sash mounted between said members and running on said tracks, said sash seat comprising a strip of relatively stii material adapted to be disposed in a vertical plane and have its ends secured together about a portion of one of said members, said strip being formed into a generally right triangular cross-sectional configuration, one of the legs of said configuration in use extending behind said one member and the other of said legs projecting laterally of said one leg into the guideway defined by said one member through a perforation formed in said one member against which the sash rests at its lower limit of vertical movement within the window srtucture, and the hypotenuse of said coniiguration extending between said laterally projecting leg and .said sill, whereby said other of said legs is braced against displacement when engaged by the sash.

References Cited in the file of this patent UNITED STATES PATENTS Szager Feb. 7, 1950 

